Strong Kα emission in picosecond laser-plasma interactions
- 1 November 1993
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 74 (9), 5372-5377
- https://doi.org/10.1063/1.354240
Abstract
Kα emission is observed from the interaction of a picosecond, 1.05 μm laser pulse at 4×1015 W/cm2 with a silicon target coated with various thicknesses of aluminum. Strong Kα emission requires a p‐polarized, high‐intensity‐contrast laser pulse. At 7.1 Å, the Kα yield is 1.5×108 photons/sr with a duration of emission of ≤8 ps and a source area of 1.6×10−6 cm2. The radiance is ≥3×109 W/cm2 sr. Monte Carlo simulations have suggested that under these conditions Kα emission is a promising candidate for an efficient, ultra‐short‐duration x‐ray source at ∼1.5 Å.Keywords
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